User guide & vale setup (#2260)

* refactored Storybook UI

* refactored Storybook UI

* removed extra cards from the doc, added card for ui components

* added hover behavior to doc page & made it look selected

* separate storybook docs and tests

* separating storybook tests and docs

* fixed spelling errors in docs

* Final round of edits for frontend, added backend folder architecture

* Created CODE_OF_CONDUCT.md

* Add code of conduct to contributing.md

* doc changes

* fixed broken links

* doc addition and changes

* introduce user guide & graphql api

* set up vale, added to docs

* vale config file

* revised backend best practices

* connecting zapier and twenty

* added warning for zapier

docs/vale/styles/write-good/E-Prime.yml

@@ -0,0 +1,32 @@
+extends: existence
+message: "Try to avoid using '%s'."
+ignorecase: true
+level: suggestion
+tokens:
+  - am
+  - are
+  - aren't
+  - be
+  - been
+  - being
+  - he's
+  - here's
+  - here's
+  - how's
+  - i'm
+  - is
+  - isn't
+  - it's
+  - she's
+  - that's
+  - there's
+  - they're
+  - was
+  - wasn't
+  - we're
+  - were
+  - weren't
+  - what's
+  - where's
+  - who's
+  - you're